I am not a sendmail expert by any means and I am struggling with the
following issue.
I use fetchmail to poll my existing email addresses and then deliver the
mail locally via sendmail. I have been losing some emails due to the
envelope from address not being from a resolvable domain. I realize that
this is in sendmail for anti-spam reasons, but since I heavily filter my
email prior to pulling it in via fetchmail, I would like to disable this
feature and have sendmail accept all mail and deliver it.
The error that I get when this happens looks like this:
reject=553 5.1.8 ... Domain of sender address
user@invalid.domain does not exist
When this happens, I do get a bounce to postmaster, but I lose the contents
of the email, as the bounce only contains the headers.
I have looked through SuSEconfig.sendmail and I noticed that if I define
SENDMAIL_EXPENSIVE to yes, then the script defines the following:
echo "FEATURE(\`accept_unresolvable_domains')dnl"
echo "FEATURE(\`accept_unqualified_senders')dnl"
Which according to the documentation that I have seen on sendmail should
have sendmail resolve the problem. However, when I do that and restart
sendmail, the behavior still doesn't change.
How can I get sendmail to do what I want without having to learn all the
nuances of sendmail configuration (considering that the O'Reilly book is two
inches thick and that I don't want to be a sendmail expert) and do it
through the existing tools provided by SuSE. I don't mind modifying the
SuSEconfig and sysconfig scripts as I am an expert at scripting and can
always put the changes back in if necessary during an upgrade.
Also, I don't want to upgrade the box to 8.1 as I barely got 8.0 to work on
the box and it is now a stable system that provides SAMBA, NFS, mail, and
proxy services to my home network.
